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# (C) 2005 Canonical Ltd
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# Copyright (C) 2005, 2006 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""Inventories map files to their name in a revision."""
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# TODO: Maybe store inventory_id in the file? Not really needed.
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__copyright__ = "Copyright (C) 2005 Canonical Ltd."
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__author__ = "Martin Pool <mbp@canonical.com>"
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import sys, os.path, types
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from cElementTree import Element, ElementTree, SubElement
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from elementtree.ElementTree import Element, ElementTree, SubElement
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from xml import XMLMixin
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from errors import bailout
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# FIXME: This refactoring of the workingtree code doesn't seem to keep
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# the WorkingTree's copy of the inventory in sync with the branch. The
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# branch modifies its working inventory when it does a commit to make
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# missing files permanently removed.
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# TODO: Maybe also keep the full path of the entry, and the children?
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# But those depend on its position within a particular inventory, and
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# it would be nice not to need to hold the backpointer here.
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# This should really be an id randomly assigned when the tree is
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# created, but it's not for now.
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from bzrlib.osutils import uuid, quotefn, splitpath, joinpath, appendpath
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from bzrlib import errors, osutils
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from bzrlib.osutils import (pumpfile, quotefn, splitpath, joinpath,
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pathjoin, sha_strings)
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from bzrlib.errors import (NotVersionedError, InvalidEntryName,
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BzrError, BzrCheckError, BinaryFile)
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from bzrlib.trace import mutter
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class InventoryEntry(XMLMixin):
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class InventoryEntry(object):
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"""Description of a versioned file.
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An InventoryEntry has the following fields, which are also
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present in the XML inventory-entry element:
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* *name*: (only the basename within the directory, must not
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* *kind*: "directory" or "file"
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* *directory_id*: (if absent/null means the branch root directory)
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* *text_sha1*: only for files
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* *text_size*: in bytes, only for files
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* *text_id*: identifier for the text version, only for files
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InventoryEntries can also exist inside a WorkingTree
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inventory, in which case they are not yet bound to a
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particular revision of the file. In that case the text_sha1,
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text_size and text_id are absent.
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(within the parent directory)
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file_id of the parent directory, or ROOT_ID
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the revision_id in which this variation of this file was
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Indicates that this file should be executable on systems
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sha-1 of the text of the file
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size in bytes of the text of the file
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(reading a version 4 tree created a text_id field.)
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>>> i = Inventory()
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>>> i.add(InventoryEntry('123', 'src', kind='directory'))
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>>> i.add(InventoryEntry('2323', 'hello.c', parent_id='123'))
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>>> for j in i.iter_entries():
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>>> i.add(InventoryDirectory('123', 'src', ROOT_ID))
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InventoryDirectory('123', 'src', parent_id='TREE_ROOT', revision=None)
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>>> i.add(InventoryFile('2323', 'hello.c', parent_id='123'))
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InventoryFile('2323', 'hello.c', parent_id='123', sha1=None, len=None)
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>>> shouldbe = {0: '', 1: 'src', 2: pathjoin('src','hello.c')}
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>>> for ix, j in enumerate(i.iter_entries()):
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... print (j[0] == shouldbe[ix], j[1])
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('src', InventoryEntry('123', 'src', kind='directory', parent_id=None))
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('src/hello.c', InventoryEntry('2323', 'hello.c', kind='file', parent_id='123'))
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>>> i.add(InventoryEntry('2323', 'bye.c', parent_id='123'))
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(True, RootEntry('TREE_ROOT', u'', parent_id=None, revision=None))
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(True, InventoryDirectory('123', 'src', parent_id='TREE_ROOT', revision=None))
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(True, InventoryFile('2323', 'hello.c', parent_id='123', sha1=None, len=None))
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>>> i.add(InventoryFile('2323', 'bye.c', '123'))
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Traceback (most recent call last):
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BzrError: ('inventory already contains entry with id {2323}', [])
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>>> i.add(InventoryEntry('2324', 'bye.c', parent_id='123'))
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>>> i.add(InventoryEntry('2325', 'wibble', parent_id='123', kind='directory'))
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BzrError: inventory already contains entry with id {2323}
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>>> i.add(InventoryFile('2324', 'bye.c', '123'))
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InventoryFile('2324', 'bye.c', parent_id='123', sha1=None, len=None)
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>>> i.add(InventoryDirectory('2325', 'wibble', '123'))
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InventoryDirectory('2325', 'wibble', parent_id='123', revision=None)
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>>> i.path2id('src/wibble')
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>>> i.add(InventoryEntry('2326', 'wibble.c', parent_id='2325'))
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>>> i.add(InventoryFile('2326', 'wibble.c', '2325'))
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InventoryFile('2326', 'wibble.c', parent_id='2325', sha1=None, len=None)
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InventoryEntry('2326', 'wibble.c', kind='file', parent_id='2325')
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>>> for j in i.iter_entries():
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... assert i.path2id(j[0])
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InventoryFile('2326', 'wibble.c', parent_id='2325', sha1=None, len=None)
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>>> for path, entry in i.iter_entries():
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... assert i.path2id(path)
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src/wibble/wibble.c
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>>> i.id2path('2326')
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'src/wibble/wibble.c'
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:todo: Maybe also keep the full path of the entry, and the children?
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But those depend on its position within a particular inventory, and
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it would be nice not to need to hold the backpointer here.
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def __init__(self, file_id, name, kind='file', text_id=None,
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# Constants returned by describe_change()
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# TODO: These should probably move to some kind of FileChangeDescription
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# class; that's like what's inside a TreeDelta but we want to be able to
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# generate them just for one file at a time.
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MODIFIED_AND_RENAMED = 'modified and renamed'
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def detect_changes(self, old_entry):
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"""Return a (text_modified, meta_modified) from this to old_entry.
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_read_tree_state must have been called on self and old_entry prior to
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calling detect_changes.
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def diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse=False):
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"""Perform a diff from this to to_entry.
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text_diff will be used for textual difference calculation.
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This is a template method, override _diff in child classes.
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self._read_tree_state(tree.id2path(self.file_id), tree)
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# cannot diff from one kind to another - you must do a removal
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# and an addif they do not match.
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assert self.kind == to_entry.kind
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to_entry._read_tree_state(to_tree.id2path(to_entry.file_id),
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self._diff(text_diff, from_label, tree, to_label, to_entry, to_tree,
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def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse=False):
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"""Perform a diff between two entries of the same kind."""
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def find_previous_heads(self, previous_inventories,
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versioned_file_store,
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"""Return the revisions and entries that directly precede this.
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Returned as a map from revision to inventory entry.
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This is a map containing the file revisions in all parents
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for which the file exists, and its revision is not a parent of
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any other. If the file is new, the set will be empty.
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:param versioned_file_store: A store where ancestry data on this
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file id can be queried.
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:param transaction: The transaction that queries to the versioned
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file store should be completed under.
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:param entry_vf: The entry versioned file, if its already available.
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def get_ancestors(weave, entry):
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return set(weave.get_ancestry(entry.revision))
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# revision:ie mapping for each ie found in previous_inventories.
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# revision:ie mapping with one revision for each head.
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# revision: ancestor list for each head
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# identify candidate head revision ids.
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for inv in previous_inventories:
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if self.file_id in inv:
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ie = inv[self.file_id]
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assert ie.file_id == self.file_id
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if ie.revision in candidates:
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# same revision value in two different inventories:
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# correct possible inconsistencies:
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# * there was a bug in revision updates with 'x' bit
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if candidates[ie.revision].executable != ie.executable:
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candidates[ie.revision].executable = False
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ie.executable = False
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except AttributeError:
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# must now be the same.
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assert candidates[ie.revision] == ie
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# add this revision as a candidate.
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candidates[ie.revision] = ie
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# common case optimisation
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if len(candidates) == 1:
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# if there is only one candidate revision found
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# then we can opening the versioned file to access ancestry:
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# there cannot be any ancestors to eliminate when there is
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# only one revision available.
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heads[ie.revision] = ie
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# eliminate ancestors amongst the available candidates:
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# heads are those that are not an ancestor of any other candidate
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# - this provides convergence at a per-file level.
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for ie in candidates.values():
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# may be an ancestor of a known head:
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already_present = 0 != len(
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[head for head in heads
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if ie.revision in head_ancestors[head]])
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# an ancestor of an analyzed candidate.
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# not an ancestor of a known head:
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# load the versioned file for this file id if needed
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entry_vf = versioned_file_store.get_weave_or_empty(
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self.file_id, transaction)
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ancestors = get_ancestors(entry_vf, ie)
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# may knock something else out:
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check_heads = list(heads.keys())
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for head in check_heads:
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if head in ancestors:
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# this previously discovered 'head' is not
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# really a head - its an ancestor of the newly
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head_ancestors[ie.revision] = ancestors
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heads[ie.revision] = ie
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def get_tar_item(self, root, dp, now, tree):
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"""Get a tarfile item and a file stream for its content."""
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item = tarfile.TarInfo(pathjoin(root, dp))
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# TODO: would be cool to actually set it to the timestamp of the
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# revision it was last changed
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fileobj = self._put_in_tar(item, tree)
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"""Return true if the object this entry represents has textual data.
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Note that textual data includes binary content.
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Also note that all entries get weave files created for them.
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This attribute is primarily used when upgrading from old trees that
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did not have the weave index for all inventory entries.
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def __init__(self, file_id, name, parent_id, text_id=None):
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"""Create an InventoryEntry
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The filename must be a single component, relative to the
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parent directory; it cannot be a whole path or relative name.
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>>> e = InventoryEntry('123', 'hello.c')
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>>> e = InventoryFile('123', 'hello.c', ROOT_ID)
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>>> e = InventoryEntry('123', 'src/hello.c')
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>>> e = InventoryFile('123', 'src/hello.c', ROOT_ID)
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Traceback (most recent call last):
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BzrError: ("InventoryEntry name is not a simple filename: 'src/hello.c'", [])
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InvalidEntryName: Invalid entry name: src/hello.c
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if len(splitpath(name)) != 1:
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bailout('InventoryEntry name is not a simple filename: %r'
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assert isinstance(name, basestring), name
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if '/' in name or '\\' in name:
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raise InvalidEntryName(name=name)
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self.executable = False
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self.text_sha1 = None
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self.text_size = None
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self.file_id = file_id
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assert kind in ['file', 'directory']
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self.text_id = text_id
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self.parent_id = parent_id
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self.text_sha1 = None
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self.text_size = None
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if kind == 'directory':
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other = InventoryEntry(self.file_id, self.name, self.kind,
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self.text_id, self.parent_id)
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self.symlink_target = None
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def kind_character(self):
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"""Return a short kind indicator useful for appending to names."""
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raise BzrError('unknown kind %r' % self.kind)
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known_kinds = ('file', 'directory', 'symlink', 'root_directory')
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def _put_in_tar(self, item, tree):
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"""populate item for stashing in a tar, and return the content stream.
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If no content is available, return None.
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raise BzrError("don't know how to export {%s} of kind %r" %
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(self.file_id, self.kind))
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def put_on_disk(self, dest, dp, tree):
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"""Create a representation of self on disk in the prefix dest.
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This is a template method - implement _put_on_disk in subclasses.
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fullpath = pathjoin(dest, dp)
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self._put_on_disk(fullpath, tree)
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# mutter(" export {%s} kind %s to %s", self.file_id,
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# self.kind, fullpath)
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def _put_on_disk(self, fullpath, tree):
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"""Put this entry onto disk at fullpath, from tree tree."""
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raise BzrError("don't know how to export {%s} of kind %r" % (self.file_id, self.kind))
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def sorted_children(self):
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return sorted(self.children.items())
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def versionable_kind(kind):
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return kind in ('file', 'directory', 'symlink')
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def check(self, checker, rev_id, inv, tree):
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"""Check this inventory entry is intact.
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This is a template method, override _check for kind specific
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:param checker: Check object providing context for the checks;
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can be used to find out what parts of the repository have already
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:param rev_id: Revision id from which this InventoryEntry was loaded.
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Not necessarily the last-changed revision for this file.
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:param inv: Inventory from which the entry was loaded.
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:param tree: RevisionTree for this entry.
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if self.parent_id is not None:
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if not inv.has_id(self.parent_id):
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raise BzrCheckError('missing parent {%s} in inventory for revision {%s}'
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% (self.parent_id, rev_id))
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self._check(checker, rev_id, tree)
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def _check(self, checker, rev_id, tree):
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"""Check this inventory entry for kind specific errors."""
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raise BzrCheckError('unknown entry kind %r in revision {%s}' %
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"""Clone this inventory entry."""
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raise NotImplementedError
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def describe_change(old_entry, new_entry):
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"""Describe the change between old_entry and this.
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This smells of being an InterInventoryEntry situation, but as its
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the first one, we're making it a static method for now.
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An entry with a different parent, or different name is considered
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to be renamed. Reparenting is an internal detail.
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Note that renaming the parent does not trigger a rename for the
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# TODO: Perhaps return an object rather than just a string
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if old_entry is new_entry:
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# also the case of both being None
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elif old_entry is None:
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elif new_entry is None:
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text_modified, meta_modified = new_entry.detect_changes(old_entry)
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if text_modified or meta_modified:
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# TODO 20060511 (mbp, rbc) factor out 'detect_rename' here.
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if old_entry.parent_id != new_entry.parent_id:
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elif old_entry.name != new_entry.name:
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if renamed and not modified:
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return InventoryEntry.RENAMED
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if modified and not renamed:
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if modified and renamed:
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return InventoryEntry.MODIFIED_AND_RENAMED
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return ("%s(%r, %r, parent_id=%r, revision=%r)"
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% (self.__class__.__name__,
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def snapshot(self, revision, path, previous_entries,
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work_tree, commit_builder):
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"""Make a snapshot of this entry which may or may not have changed.
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This means that all its fields are populated, that it has its
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text stored in the text store or weave.
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# mutter('new parents of %s are %r', path, previous_entries)
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self._read_tree_state(path, work_tree)
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# TODO: Where should we determine whether to reuse a
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# previous revision id or create a new revision? 20060606
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if len(previous_entries) == 1:
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# cannot be unchanged unless there is only one parent file rev.
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parent_ie = previous_entries.values()[0]
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if self._unchanged(parent_ie):
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# mutter("found unchanged entry")
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self.revision = parent_ie.revision
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return self._snapshot_into_revision(revision, previous_entries,
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work_tree, commit_builder)
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def _snapshot_into_revision(self, revision, previous_entries, work_tree,
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"""Record this revision unconditionally into a store.
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The entry's last-changed revision property (`revision`) is updated to
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that of the new revision.
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:param revision: id of the new revision that is being recorded.
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:returns: String description of the commit (e.g. "merged", "modified"), etc.
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# mutter('new revision {%s} for {%s}', revision, self.file_id)
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self.revision = revision
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self._snapshot_text(previous_entries, work_tree, commit_builder)
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def _snapshot_text(self, file_parents, work_tree, commit_builder):
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"""Record the 'text' of this entry, whatever form that takes.
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This default implementation simply adds an empty text.
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raise NotImplementedError(self._snapshot_text)
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def __eq__(self, other):
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if not isinstance(other, InventoryEntry):
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return NotImplemented
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return ((self.file_id == other.file_id)
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and (self.name == other.name)
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and (other.symlink_target == self.symlink_target)
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and (self.text_sha1 == other.text_sha1)
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and (self.text_size == other.text_size)
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and (self.text_id == other.text_id)
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and (self.parent_id == other.parent_id)
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and (self.kind == other.kind)
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and (self.revision == other.revision)
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and (self.executable == other.executable)
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def __ne__(self, other):
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return not (self == other)
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raise ValueError('not hashable')
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def _unchanged(self, previous_ie):
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"""Has this entry changed relative to previous_ie.
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This method should be overridden in child classes.
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# different inv parent
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if previous_ie.parent_id != self.parent_id:
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elif previous_ie.name != self.name:
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def _read_tree_state(self, path, work_tree):
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"""Populate fields in the inventory entry from the given tree.
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Note that this should be modified to be a noop on virtual trees
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as all entries created there are prepopulated.
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# TODO: Rather than running this manually, we should check the
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# working sha1 and other expensive properties when they're
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# first requested, or preload them if they're already known
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pass # nothing to do by default
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def _forget_tree_state(self):
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class RootEntry(InventoryEntry):
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target']
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def _check(self, checker, rev_id, tree):
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"""See InventoryEntry._check"""
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def __init__(self, file_id):
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self.file_id = file_id
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self.kind = 'root_directory'
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self.parent_id = None
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def __eq__(self, other):
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if not isinstance(other, RootEntry):
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return NotImplemented
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return (self.file_id == other.file_id) \
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and (self.children == other.children)
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class InventoryDirectory(InventoryEntry):
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"""A directory in an inventory."""
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target']
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def _check(self, checker, rev_id, tree):
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"""See InventoryEntry._check"""
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if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
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raise BzrCheckError('directory {%s} has text in revision {%s}'
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% (self.file_id, rev_id))
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other = InventoryDirectory(self.file_id, self.name, self.parent_id)
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other.revision = self.revision
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# note that children are *not* copied; they're pulled across when
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def __init__(self, file_id, name, parent_id):
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super(InventoryDirectory, self).__init__(file_id, name, parent_id)
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self.kind = 'directory'
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def kind_character(self):
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"""See InventoryEntry.kind_character."""
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def _put_in_tar(self, item, tree):
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"""See InventoryEntry._put_in_tar."""
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item.type = tarfile.DIRTYPE
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def _put_on_disk(self, fullpath, tree):
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"""See InventoryEntry._put_on_disk."""
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def _snapshot_text(self, file_parents, work_tree, commit_builder):
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"""See InventoryEntry._snapshot_text."""
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commit_builder.modified_directory(self.file_id, file_parents)
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class InventoryFile(InventoryEntry):
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"""A file in an inventory."""
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target']
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def _check(self, checker, tree_revision_id, tree):
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"""See InventoryEntry._check"""
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t = (self.file_id, self.revision)
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if t in checker.checked_texts:
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prev_sha = checker.checked_texts[t]
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if prev_sha != self.text_sha1:
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raise BzrCheckError('mismatched sha1 on {%s} in {%s}' %
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(self.file_id, tree_revision_id))
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checker.repeated_text_cnt += 1
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if self.file_id not in checker.checked_weaves:
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mutter('check weave {%s}', self.file_id)
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w = tree.get_weave(self.file_id)
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# Not passing a progress bar, because it creates a new
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# progress, which overwrites the current progress,
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# and doesn't look nice
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checker.checked_weaves[self.file_id] = True
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w = tree.get_weave(self.file_id)
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mutter('check version {%s} of {%s}', tree_revision_id, self.file_id)
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checker.checked_text_cnt += 1
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# We can't check the length, because Weave doesn't store that
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# information, and the whole point of looking at the weave's
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# sha1sum is that we don't have to extract the text.
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if self.text_sha1 != w.get_sha1(self.revision):
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raise BzrCheckError('text {%s} version {%s} wrong sha1'
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% (self.file_id, self.revision))
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checker.checked_texts[t] = self.text_sha1
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other = InventoryFile(self.file_id, self.name, self.parent_id)
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other.executable = self.executable
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other.text_id = self.text_id
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other.text_sha1 = self.text_sha1
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other.text_size = self.text_size
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other.revision = self.revision
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def detect_changes(self, old_entry):
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"""See InventoryEntry.detect_changes."""
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assert self.text_sha1 is not None
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assert old_entry.text_sha1 is not None
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text_modified = (self.text_sha1 != old_entry.text_sha1)
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meta_modified = (self.executable != old_entry.executable)
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return text_modified, meta_modified
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def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse=False):
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"""See InventoryEntry._diff."""
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from_text = tree.get_file(self.file_id).readlines()
635
to_text = to_tree.get_file(to_entry.file_id).readlines()
639
text_diff(from_label, from_text,
640
to_label, to_text, output_to)
642
text_diff(to_label, to_text,
643
from_label, from_text, output_to)
646
label_pair = (to_label, from_label)
648
label_pair = (from_label, to_label)
649
print >> output_to, "Binary files %s and %s differ" % label_pair
652
"""See InventoryEntry.has_text."""
655
def __init__(self, file_id, name, parent_id):
656
super(InventoryFile, self).__init__(file_id, name, parent_id)
659
def kind_character(self):
660
"""See InventoryEntry.kind_character."""
663
def _put_in_tar(self, item, tree):
664
"""See InventoryEntry._put_in_tar."""
665
item.type = tarfile.REGTYPE
666
fileobj = tree.get_file(self.file_id)
667
item.size = self.text_size
668
if tree.is_executable(self.file_id):
674
def _put_on_disk(self, fullpath, tree):
675
"""See InventoryEntry._put_on_disk."""
676
pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
677
if tree.is_executable(self.file_id):
678
os.chmod(fullpath, 0755)
680
def _read_tree_state(self, path, work_tree):
681
"""See InventoryEntry._read_tree_state."""
682
self.text_sha1 = work_tree.get_file_sha1(self.file_id, path=path)
683
# FIXME: 20050930 probe for the text size when getting sha1
684
# in _read_tree_state
685
self.executable = work_tree.is_executable(self.file_id, path=path)
139
687
def __repr__(self):
140
return ("%s(%r, %r, kind=%r, parent_id=%r)"
688
return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s)"
141
689
% (self.__class__.__name__,
148
def to_element(self):
149
"""Convert to XML element"""
152
e.set('name', self.name)
153
e.set('file_id', self.file_id)
154
e.set('kind', self.kind)
156
if self.text_size is not None:
157
e.set('text_size', '%d' % self.text_size)
159
for f in ['text_id', 'text_sha1', 'parent_id']:
169
def from_element(cls, elt):
170
assert elt.tag == 'entry'
171
self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'))
172
self.text_id = elt.get('text_id')
173
self.text_sha1 = elt.get('text_sha1')
174
self.parent_id = elt.get('parent_id')
176
## mutter("read inventoryentry: %r" % (elt.attrib))
178
v = elt.get('text_size')
179
self.text_size = v and int(v)
184
from_element = classmethod(from_element)
186
def __cmp__(self, other):
189
if not isinstance(other, InventoryEntry):
190
return NotImplemented
192
return cmp(self.file_id, other.file_id) \
193
or cmp(self.name, other.name) \
194
or cmp(self.text_sha1, other.text_sha1) \
195
or cmp(self.text_size, other.text_size) \
196
or cmp(self.text_id, other.text_id) \
197
or cmp(self.parent_id, other.parent_id) \
198
or cmp(self.kind, other.kind)
202
class Inventory(XMLMixin):
696
def _forget_tree_state(self):
697
self.text_sha1 = None
699
def _snapshot_text(self, file_parents, work_tree, commit_builder):
700
"""See InventoryEntry._snapshot_text."""
701
def get_content_byte_lines():
702
return work_tree.get_file(self.file_id).readlines()
703
self.text_sha1, self.text_size = commit_builder.modified_file_text(
704
self.file_id, file_parents, get_content_byte_lines, self.text_sha1, self.text_size)
706
def _unchanged(self, previous_ie):
707
"""See InventoryEntry._unchanged."""
708
compatible = super(InventoryFile, self)._unchanged(previous_ie)
709
if self.text_sha1 != previous_ie.text_sha1:
712
# FIXME: 20050930 probe for the text size when getting sha1
713
# in _read_tree_state
714
self.text_size = previous_ie.text_size
715
if self.executable != previous_ie.executable:
720
class InventoryLink(InventoryEntry):
721
"""A file in an inventory."""
723
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
724
'text_id', 'parent_id', 'children', 'executable',
725
'revision', 'symlink_target']
727
def _check(self, checker, rev_id, tree):
728
"""See InventoryEntry._check"""
729
if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
730
raise BzrCheckError('symlink {%s} has text in revision {%s}'
731
% (self.file_id, rev_id))
732
if self.symlink_target is None:
733
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
734
% (self.file_id, rev_id))
737
other = InventoryLink(self.file_id, self.name, self.parent_id)
738
other.symlink_target = self.symlink_target
739
other.revision = self.revision
742
def detect_changes(self, old_entry):
743
"""See InventoryEntry.detect_changes."""
744
# FIXME: which _modified field should we use ? RBC 20051003
745
text_modified = (self.symlink_target != old_entry.symlink_target)
747
mutter(" symlink target changed")
748
meta_modified = False
749
return text_modified, meta_modified
751
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
752
output_to, reverse=False):
753
"""See InventoryEntry._diff."""
754
from_text = self.symlink_target
755
if to_entry is not None:
756
to_text = to_entry.symlink_target
761
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
764
print >>output_to, '=== target was %r' % self.symlink_target
766
print >>output_to, '=== target is %r' % self.symlink_target
768
def __init__(self, file_id, name, parent_id):
769
super(InventoryLink, self).__init__(file_id, name, parent_id)
770
self.kind = 'symlink'
772
def kind_character(self):
773
"""See InventoryEntry.kind_character."""
776
def _put_in_tar(self, item, tree):
777
"""See InventoryEntry._put_in_tar."""
778
item.type = tarfile.SYMTYPE
782
item.linkname = self.symlink_target
785
def _put_on_disk(self, fullpath, tree):
786
"""See InventoryEntry._put_on_disk."""
788
os.symlink(self.symlink_target, fullpath)
790
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
792
def _read_tree_state(self, path, work_tree):
793
"""See InventoryEntry._read_tree_state."""
794
self.symlink_target = work_tree.get_symlink_target(self.file_id)
796
def _forget_tree_state(self):
797
self.symlink_target = None
799
def _unchanged(self, previous_ie):
800
"""See InventoryEntry._unchanged."""
801
compatible = super(InventoryLink, self)._unchanged(previous_ie)
802
if self.symlink_target != previous_ie.symlink_target:
806
def _snapshot_text(self, file_parents, work_tree, commit_builder):
807
"""See InventoryEntry._snapshot_text."""
808
commit_builder.modified_link(
809
self.file_id, file_parents, self.symlink_target)
812
class Inventory(object):
203
813
"""Inventory of versioned files in a tree.
205
An Inventory acts like a set of InventoryEntry items. You can
206
also look files up by their file_id or name.
208
May be read from and written to a metadata file in a tree. To
209
manipulate the inventory (for example to add a file), it is read
210
in, modified, and then written back out.
815
This describes which file_id is present at each point in the tree,
816
and possibly the SHA-1 or other information about the file.
817
Entries can be looked up either by path or by file_id.
212
819
The inventory represents a typical unix file tree, with
213
820
directories containing files and subdirectories. We never store
237
842
May also look up by name:
239
844
>>> [x[0] for x in inv.iter_entries()]
242
>>> inv.write_xml(sys.stdout)
244
<entry file_id="123-123" kind="file" name="hello.c" />
846
>>> inv = Inventory('TREE_ROOT-12345678-12345678')
847
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
848
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT-12345678-12345678', sha1=None, len=None)
249
## TODO: Make sure only canonical filenames are stored.
251
## TODO: Do something sensible about the possible collisions on
252
## case-losing filesystems. Perhaps we should just always forbid
255
## TODO: No special cases for root, rather just give it a file id
256
## like everything else.
258
## TODO: Probably change XML serialization to use nesting
850
def __init__(self, root_id=ROOT_ID, revision_id=None):
261
851
"""Create or read an inventory.
263
853
If a working directory is specified, the inventory is read
264
854
from there. If the file is specified, read from that. If not,
265
855
the inventory is created empty.
857
The inventory is created with a default root directory, with
267
self._root = InventoryEntry(None, '', kind='directory')
268
self._byid = {None: self._root}
860
# We are letting Branch.create() create a unique inventory
861
# root id. Rather than generating a random one here.
863
# root_id = bzrlib.branch.gen_file_id('TREE_ROOT')
864
self.root = RootEntry(root_id)
865
# FIXME: this isn't ever used, changing it to self.revision may break
866
# things. TODO make everything use self.revision_id
867
self.revision_id = revision_id
868
self._byid = {self.root.file_id: self.root}
871
# TODO: jam 20051218 Should copy also copy the revision_id?
872
entries = self.iter_entries()
873
other = Inventory(entries.next()[1].file_id)
874
# copy recursively so we know directories will be added before
875
# their children. There are more efficient ways than this...
876
for path, entry in entries():
877
other.add(entry.copy())
271
880
def __iter__(self):
272
881
return iter(self._byid)
275
883
def __len__(self):
276
884
"""Returns number of entries."""
277
885
return len(self._byid)
280
def iter_entries(self, parent_id=None):
887
def iter_entries(self, from_dir=None):
281
888
"""Return (path, entry) pairs, in order by name."""
282
kids = self[parent_id].children.items()
284
for name, ie in kids:
286
if ie.kind == 'directory':
287
for cn, cie in self.iter_entries(parent_id=ie.file_id):
288
yield joinpath([name, cn]), cie
291
def directories(self, include_root=True):
292
"""Return (path, entry) pairs for all directories.
296
for path, entry in self.iter_entries():
297
if entry.kind == 'directory':
893
elif isinstance(from_dir, basestring):
894
from_dir = self._byid[from_dir]
896
# unrolling the recursive called changed the time from
897
# 440ms/663ms (inline/total) to 116ms/116ms
898
children = from_dir.children.items()
900
children = collections.deque(children)
901
stack = [(u'', children)]
903
from_dir_relpath, children = stack[-1]
906
name, ie = children.popleft()
908
# we know that from_dir_relpath never ends in a slash
909
# and 'f' doesn't begin with one, we can do a string op, rather
910
# than the checks of pathjoin(), though this means that all paths
912
path = from_dir_relpath + '/' + name
916
if ie.kind != 'directory':
919
# But do this child first
920
new_children = ie.children.items()
922
new_children = collections.deque(new_children)
923
stack.append((path, new_children))
924
# Break out of inner loop, so that we start outer loop with child
927
# if we finished all children, pop it off the stack
930
def iter_entries_by_dir(self, from_dir=None):
931
"""Iterate over the entries in a directory first order.
933
This returns all entries for a directory before returning
934
the entries for children of a directory. This is not
935
lexicographically sorted order, and is a hybrid between
936
depth-first and breadth-first.
938
:return: This yields (path, entry) pairs
940
# TODO? Perhaps this should return the from_dir so that the root is
941
# yielded? or maybe an option?
946
elif isinstance(from_dir, basestring):
947
from_dir = self._byid[from_dir]
949
stack = [(u'', from_dir)]
951
cur_relpath, cur_dir = stack.pop()
954
for child_name, child_ie in sorted(cur_dir.children.iteritems()):
956
child_relpath = cur_relpath + child_name
958
yield child_relpath, child_ie
960
if child_ie.kind == 'directory':
961
child_dirs.append((child_relpath+'/', child_ie))
962
stack.extend(reversed(child_dirs))
965
"""Return list of (path, ie) for all entries except the root.
967
This may be faster than iter_entries.
970
def descend(dir_ie, dir_path):
971
kids = dir_ie.children.items()
973
for name, ie in kids:
974
child_path = pathjoin(dir_path, name)
975
accum.append((child_path, ie))
976
if ie.kind == 'directory':
977
descend(ie, child_path)
979
descend(self.root, u'')
982
def directories(self):
983
"""Return (path, entry) pairs for all directories, including the root.
986
def descend(parent_ie, parent_path):
987
accum.append((parent_path, parent_ie))
989
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
992
for name, child_ie in kids:
993
child_path = pathjoin(parent_path, name)
994
descend(child_ie, child_path)
995
descend(self.root, u'')
302
998
def __contains__(self, file_id):
303
999
"""True if this entry contains a file with given id.
305
1001
>>> inv = Inventory()
306
>>> inv.add(InventoryEntry('123', 'foo.c'))
1002
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1003
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
307
1004
>>> '123' in inv
309
1006
>>> '456' in inv